diff --git a/target/linux/mediatek/mt7622/base-files/lib/upgrade/platform.sh b/target/linux/mediatek/mt7622/base-files/lib/upgrade/platform.sh
index 0cdd8df8f99..513741d6672 100755
--- a/target/linux/mediatek/mt7622/base-files/lib/upgrade/platform.sh
+++ b/target/linux/mediatek/mt7622/base-files/lib/upgrade/platform.sh
@@ -12,6 +12,7 @@ platform_do_upgrade() {
 		export_partdevice rootdev 0
 		case "$rootdev" in
 		mmc*)
+			blockdev --rereadpt /dev/$rootdev || return 1
 			local fitpart=$(get_partition_by_name $rootdev "production")
 			[ "$fitpart" ] || return 1
 			dd if=/dev/zero of=/dev/$fitpart bs=4096 count=1 2>/dev/null
diff --git a/target/linux/mediatek/mt7623/base-files/lib/upgrade/platform.sh b/target/linux/mediatek/mt7623/base-files/lib/upgrade/platform.sh
index 4564bc61dd4..11da6314dce 100755
--- a/target/linux/mediatek/mt7623/base-files/lib/upgrade/platform.sh
+++ b/target/linux/mediatek/mt7623/base-files/lib/upgrade/platform.sh
@@ -86,6 +86,7 @@ platform_do_upgrade() {
 	bananapi,bpi-r2)
 		export_bootdevice
 		export_partdevice rootdev 0
+		blockdev --rereadpt /dev/$rootdev || return 1
 		export_partdevice fitpart 3
 		[ "$fitpart" ] || return 1
 		dd if=/dev/zero of=/dev/$fitpart bs=4096 count=1 2>/dev/null